1201231101201 has 4 divisors (see below), whose sum is σ = 1601641468272. Its totient is φ = 800820734132.

The previous prime is 1201231101197. The next prime is 1201231101233. The reversal of 1201231101201 is 1021011321021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201231101201 - 2² = 1201231101197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201231101101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200205183531 + ... + 200205183536.

It is an arithmetic number, because the mean of its divisors is an integer number (400410367068).

Almost surely, 2^{1201231101201} is an apocalyptic number.

It is an amenable number.

1201231101201 is a deficient number, since it is larger than the sum of its proper divisors (400410367071).

1201231101201 is an equidigital number, since it uses as much as digits as its factorization.

1201231101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400410367070.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1201231101201 its reverse (1021011321021), we get a palindrome (2222242422222).

The spelling of 1201231101201 in words is "one trillion, two hundred one billion, two hundred thirty-one million, one hundred one thousand, two hundred one".